Orchestina clavulata, Tong, Yanfeng & Li, Shuqiang, 2011

Tong, Yanfeng & Li, Shuqiang, 2011, Six new Orchestina species from Hainan Island, China (Araneae, Oonopidae), Zootaxa 3061, pp. 36-52 : 38-39

Orchestina clavulata sp. nov.

Figures 1C–D , 2B, 3B, 4B, 5D, 7A–F

Type material: Holotype male ( IZCAS Ar 19335), China: Hainan, Lingshui, Diaoluoshan, Plank road side, 963 m a.s.l., 18°43.631´N, 109°51.939´E, 7 August 2010, leg. G. Zheng; 6 male and 3 female paratypes ( IZCAS Ar 19334), same data as holotype; 2 male and 5 female paratypes ( IZCAS Ar 19324), same data as holotype, 948 m a.s.l., 18°43.644´N, 109°52.704´E, 6 August 2010, leg. G. Zheng; 7 male and 11 female paratypes ( IZCAS Ar 19333), same data as holotype, 930 m a.s.l., 18°43.664´N, 109°52.704´E, 6 August 2010, leg. G. Zheng; 1 male and 1 female paratypes ( IZCAS Ar 19331), same data as holotype, lakeside hill, 935 m a.s.l., 18°43.387´N, 109°51.273´E, 10 August 2010, leg. G. Zheng; 9 male and 9 female paratypes ( IZCAS Ar 19332), same data as holotype, 956 m a.s.l., 18°43.599´N, 109°51.991´E, 8 August 2010, leg. G. Zheng; 1 male and 3 female paratypes ( IZCAS Ar 19326), China: Ledong, Jianfengling, crossing to Fifth subarea, 855 m a.s.l., 18°44.272´N, 108°52.015´E, 13 August 2010, leg. G. Zheng; 1 female paratype ( IZCAS Ar 19327), same data as holotype, Plank road side, 978 m a.s.l., 18°43.673´N, 109°51.827´E, 9 August 2010, leg. G. Zheng; 1 female paratype ( IZCAS Ar 19328), China: Ledong, Jianfengling, Chahekou Protection Station, 235 m a.s.l., 18°44.727´N, 108°59.632´E, 17 August 2010, leg. G. Zheng; 4 female paratypes ( IZCAS Ar 19327), same data as holotype, Plank road side, 978 m a.s.l., 18°43.673´N, 109°51.827´E, 9 August 2010, leg. G. Zheng; 1 male and 1 female paratypes ( IZCAS Ar 19330), same data as holotype, 930 m a.s.l., 18°43.664´N, 109°52.704´E, 6 August 2010, leg. G. Zheng.

Etymology: The specific name is an adjective and refers to the shape of the sclerite of the female genitalia.

Diagnosis: The new species is most similar to O. thoracica Xu, 1987 , but can be distinguished by the strongly curved seminal duct of the male palp, and by the shape of the female genitalia.

Description: Male. Total length 0.92, carapace length 0.52, carapace width 0.38, abdomen length 0.48. Habitus as in Figs 1C, D . Color in alcohol: Carapace yellow, legs and palp pale yellow. Cephalothorax: Carapace oval, surface smooth, with net-shaped pattern, with some long setae on top surface, pars cephalica slightly elevated in lateral view, with rounded posterolateral corners. Clypeus ( Fig. 3B ) similar to O. aureola sp. nov., ALE separated from edge of carapace by their diameter or more; setae present, needle-like. Eyes similar to O. aureola sp. nov. Sternum (Fig. 2B) longer than wide, with brown patches, without radial furrows between coxae, surface smooth; setae sparse, needle-like, evenly scattered, without hair tufts. Mouthparts: Chelicerae straight, anterior face unmodified; labium shortened hexagon, not fused to sternum, anterior margin not indented at middle; endites (Figs 2B, 7D) strongly sclerotized, distally not excavated, outer margin with row of denticles. Abdomen ovoid, with gray net-like pattern; pedicel tube short, unmodified, scuto-pedicel region unmodified. Legs without color pattern; femur IV thickened, much larger than femora I–III. Male genitalia ( Figs 7 A–C): Tbia of palp enlarged, cymbium small. Bulbus cucurbit-shaped, the sclerotized seminal duct strongly curved and visible through the cuticle of the palpal bulb. Embolus short.

Female. Total length 1.24, carapace length 0.54, carapace width 0.41, abdomen length 0.69. As in male except as noted. Endites with serrula. Female genitalia: Ventral view ( Figs 4 B, 7F): without special external features. Dorsal view ( Figs 5D , 7 E): Medially a large sclerite, the anterior part of which shows two short lateral protrusions; ventral to the sclerite a membrane; posterior to the sclerite a massive dorsal plate.

Distribution: Known only from Hainan Island.

Figures

FIGURE 4. Female abdomen, ventral view. A. Orchestina aureola sp. nov.; B. Orchestina clavulata sp. nov.; C. Orchestina tubulata sp. nov.; D. Orchestina truncatula sp. nov.; E. Orchestina yinggezui sp. nov.; F. Orchestina zhengi sp. nov. (black arrow shows the transverse cuticle fold). Scales: 0.2 mm.

FIGURE 7. Orchestina clavulata sp. nov. A. Male left palp, prolateral view; B. Male left palp, retrolateral view; C. Male left palp, dorsal view; D. Male endites, ventral view; E. Female genitalia, dorsal view; F. Female genitalia, ventral view. Abbreviations: Dp, dorsal plate; Pr, lateral protrusions; Sc, sclerite; Vm, ventral membrane. Scales: A – C, F, 0.1 mm; D, E, 0.05 mm.

FIGURE 1. A – H. Male, dorsal and lateral views; I – M. Female, dorsal and lateral views. A – B. Orchestina aureola sp. nov.; C – D. Orchestina clavulata sp. nov.; E – F. Orchestina truncatula sp. nov.; G – H. Orchestina tubulata sp. nov.; I – J. Orchestina yinggezui sp. nov.; K – M. Orchestina zhengi sp. nov. Scales: 0.2 mm.

FIGURE 3. A, B, D, E. Male prosoma, frontal view; C, Male chelicerae, lateral view. A. Orchestina aureola sp. nov.; B. Orchestina clavulata sp. nov.; C – D. Orchestina truncatula sp. nov. (white arrow shows the proximal apophysis, black arrow shows the characteristic distal setae); E. Orchestina tubulata sp. nov.. Scales: 0.2 mm.

FIGURE 5. A – E, G, H, J. Female genitalia, dorsal view. F, I. Female genitalia, ventral view. A – C. Orchestina aureola sp. nov.; D. Orchestina clavulata sp. nov.; E. Orchestina truncatula sp. nov.; F – G. Orchestina tubulata sp. nov.; H. Orchestina yinggezui sp. nov.; I – J. Orchestina zhengi sp. nov. (black arrow shows the transverse cuticle fold); Scales: 0.05 mm.